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EFFICIENCY OF NITROGEN AND POTASH FERTILIZERS IN ANTHROPOGENICALLY TRANSFORMED PEAT SOILS IN CULTIVATION PERENNIAL LEGUME-CEREAL GRASSES

Abstract

On the anthropogenically transformed peat soil when the content in it moving phosphorus 700-790 and potassium 620-800 mg/kg of soil optimal doses of phosphate and potash fertilizers for perennial legume-cereal grasses are P90K180. Increasing the dose of potassium to 240 kg/ha is not significantly increases productivity, but reduces the return on fertilizer yield increase. When the content of soil organic matter at the level of 50-55 % and mineral nitrogen 145-155 mg/kg of soil the most effective dose of nitrogen fertilizer is N60, providing on background P90K180 hay yield of 141.0 t/ha or 71.9 feed units, payback nitrogen and 27.5 und total (NPK) mineral fertilizer 10.9 fodder units. With increasing doses of nitrogen to 90 kg/ha of fertilizer efficiency decreases.

For citations:


Tsybulko N.N., Zaitsev A.A., Shashko A.V. EFFICIENCY OF NITROGEN AND POTASH FERTILIZERS IN ANTHROPOGENICALLY TRANSFORMED PEAT SOILS IN CULTIVATION PERENNIAL LEGUME-CEREAL GRASSES. Soil Science and Agrochemistry. 2014;(2):124-131. (In Russ.)

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ISSN 0130-8475 (Print)